Fix sweep_tiling GM sizing

Change-Id: Ib000fac05aa3a508f25b6a41c84aed5f852a34a0
TBR=
Reviewed-on: https://skia-review.googlesource.com/29901
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
1 file changed